Snubber



Jan. 27, 1942. D. M. LIGHT 2,271,486

snunnn Filed Deo. 2a, 193s 2 sheets-sheet 1 E4 J wirf 50 '50 v1li/1. i35 'K J5 I f////// l D. M. LIGHT Jin. 27, 1942.

SNUBBER Filed Dec. 28, 1939 2 Sheets-Sheet 2 BY A ATTORNEY Patented Jan.27, 1942 i SNUBBER David M. Light, Chicago, Ill., assignor to Amerle E-Y l can Steel Foundries, Chicago, Ill., a corporation of New JerseyApplication December 28,1939, serial maenner j 'n i (omer-a) r 1 23Claims.

My invention relates to friction absorbing devices and more particularlyto a snubbing device which may be used inside alcoli truck spring of atype in general use.

An object of my invention is to provide a friction absorbing devicewhich may be used in' side a coil truck spring and which may interlockwith the outer coils of the spring to maintain the device in assembledrelationship and to eliminate the necessity of using end plates.

Another object of my invention is to provide a friction absorbing devicehaving lugs which interlock with the outer coils of a coil spring andwhich may be rotated to provide adjustment for variations in the ends ofthe coll spring.

Referring to the drawings,

Figure 1 is a side elevation of my novel friction absorbing device,one-haii being shown in section, said section being taken substantiallyin the vertical plane indicated by the line I-I of Figure 2;

Figure 2 is a top plan view of the device shown in Figure 1;

Figure 3 is a bottom plan view of the device shown in Figure 1;

Figure 4 is a sectional view of my novel device without the coil spring,the section being taken substantially in the vertical plane indicated bythe line l-l of Figure 5;

Figure 5 is a top plan view of my device as shown in Figure 4; A

Figure 6 is a sectional view taken substantially in the horizontal planeindicated by the line I-B of Figure 4; Figure I is a fragmentary sideelevation showing the upper right lug indicated in Figure 4 and viewedfrom the right thereof as indicatedby the line 1--1 of Figure 5;

.Figure ll is a fragmentary side elevation showing the upper left lug asseen in Figure 4. said lug being viewed from the left thereof asindicated by the line l-I of Figure 5;

Figure 9 is a fragmentary side elevation showing the lower left lug asseen in Figure said lug being viewed from the left thereof as indicatedoy the line 9--9 of Figure 6; and

Figure 10 is a fragmentary side elevation showing the lower right lug asseen in Figure 4. said lug being viewed from .the right thereof asindicated by the line Illill of Figure 6.

Describing my novel invention in greater detail, the coil spring 2 mayenclose my novel snubbing device generally indicated at 4. A circularbase 6 may be formed from two similar coils of said spring as at I6.

trally formed on its upper" 'suri'xlcl'eV the shallow annular recess I0y servingwas positioning for a rubber spring 1 2.'lia'rgercircularrecess n formed in the buttonsdiffuse-ur saidfbase eaffords positioning mans'iorsaiddevice "on a spring seat (notshownl'iin'a well-known manner. The cylindrical housing II comprises twosemi-cylindrical walls i8 and 2f0welded as at 22 to the bottom outerannular edges of each of Vsaid members 0.

This construction permits said housing to spread outwardly in suchmanner that the outer surfaces and 526 of the walls il 'and 20respectively bear against the inner circumferential surfaces of' thecoil spring as at 30.

As best seen from a consideration of Figures 4, 6, 9, and 1,0, lugs 32and 3l project' outwardly from the.Ingallsl I! `and 2|) respectively,said lug I2 being formedat 'theggpcttqm edge of wallll, and lug I4 beingforme at a height above the bottom edge of wall 20 equalI tosubstantially a half turn of the coil spring 2. Said lugs Il and Il maybe formed as by pressing outwardly a section of the walls Il and It insuch manner as to form thereon upwardly curved surfaces Il and 3B, eachwith a radius substantially equal to the bar radius of the coil springand being spirally formed along the outer circumference of said walls asat l0 and I2 to conform with the coil turns in said spring. The curvedsurfaces I6 and 3l of said lugs may have bearing against the innercircumferential surfaces Il of `the lower Received/within said housingmayirbea plurality of arcuately shaped irictionshoes4l, il having theirouter faces 5U, Eil in sliding frictional engagement with the innercylindrical surfaces 52, 52 of said housing as at 5l. Said shoes may besupported from a top follower of circular shape having an annular flange5B depending therefrom by a neck-like portion ill and forming ith saidfollower an annular slot 62 in whicg may be inserted the inwardlydirected flanges 64, 6I formed at the top end of said shoes. When underload said shoes are forced downwardly as by abutment of said anges 64,6I with said follower as at 'and as the load is decreased, they may moveupwardly as by abutment as at 88 with said annularilange 5B.

. The rubber spring i2 is of circular Vcross-section having its top inabutment as at 'I0 against the bottom face of flange 58 andy its uppercircumferentialareas 12, 12 in abutment against the innerws'rfaces 14,'il of said shoes. Said semicircular members B, 8 and may have cen- 55spring tapers downwardly as at l5 and 1S P051- seid shoes inte nicuenalengagement with said walls, andv means on said followers interlockingwith spirals of said spring to maintain said device inassembled-relationship.

9. In a friction absorbing device, a coil spring,

a top follower, a bottom follower having frictionV said spring, aresilient memsurfaces received in ber compressed between said followers,shoes supported fromJ said top follower and urged into frictionalengagement with said surfaces by said member, and means maintaining saiddevice in assembled relationship, said means comprising lugs on saidfollowers interlocking with coils of said spring.

10. In a friction absorbing device, a coil spring, atop follower. abottom follower having friction surfaces received in said spring, aresilient member compressed between said followers, shoes supported fromsaid top follower and urged into frictional engagement with saidsurfaces by said member, and means maintaining said device in assembledrelationship, said means including lugs projecting between spirals ofsaid spring.

l1. In a friction absorbing device, a coil spring, a top follower, abottom follower having friction surfaces received in said spring,resilient means compressed between said followers, shoes supported fromsaid top follower and urged into frictional engagement with saidsurfaces by said resilient means, and means on said followersinterlocking with coils of said spring whereby said device ls maintainedin assembled relationship.

12. In a friction absorbing device, a coll spring, top and bottomfollowers, one of said followers having cylindrical friction wallsreceived within said spring, a resilient member in compression betweensaid followers, friction shoes supported from the other of saidfollowers and extending between said member and said walls, and lugs oneach of said followers engaging spirals of said spring whereby saiddevice is maintained in assembled relationship.

13. In a friction absorbing device, a coil spring, end followersreceived within said spring, one of said followers comprising aplurality of arcuate segments to facilitate assembly of said device,each of said segments having friction surfaces received within saidspring, shoes supported from the other of said followers and havingfrictions] engagement with said surfaces, and a resilient memberabutting said followers and said shoes.

14. In a friction absorbing device, a coil spring. end followers. one ofsaid followers having cylindrical friction walls received in saidspring, a resilient member compressed between said followers, shoessupported from the other of said followers and urged into frictionalengagement with said walls by said member, and means on said followersaffording adjustment of said followers within said spring.

15. In a friction absorbing device, a coil spring, a bottom followerhaving friction walls received in said spring, a top follower, resilientmeans compressed between said top and bottom followers, shoes urged intofrictional engagement with said walls by said member, and lugs on saidfollowers interlocking with coils of said spring to maintain said devicein assembled relationship.

16. In a friction absorbing device, inner and outer resilient means, endfollowers received within said outer resilient means in interlockingengagement therewith and abutting said inner resilient means, and shoessupported from one of said followers and urged into frictipnal engage- Y3 ment with the other oi'saidY followers by said inner resilient means.Y

17. In a `friction absorbing device, a-coil spring, a top follower, abottom follower having cylindrical friction walls received within saidspring, friction shoes supported from Qcuneo! said followers andhaving'frictiolil" 'engagement with said walls, and resilient meansVlrrcompression between said followers, said resilient means hav-- ingnon-sliding abutment with said shoes to prevent abrasion.

18. In a friction absorbing device, a coil spring. end followersreceived within said spring. one of said followers having friction wallsreceived in said spring, a plurality of friction shoes having frlctionalengagement with said walls and carried by the other of said followers,and a resilient member abutting said followers and said shoes.

19. In a friction absorbing device. a coil spring, a top follower, abottom follower comprising a plurality of segments, each of saidsegments having friction surfaces received in said spring, frictionshoes carried by one of said followers, and resilient means abuttingsaid shoes and said followers and urging said shoes into frlctionalengagement with said surfaces.

20. In a friction absorbing device, a coil spring, a bottom followerhaving friction surfaces received ln said spring, a top follower,friction shoes carried by said top follower and having frictionalengagement with said surfaces, and mailient means abutting said top andbottom followers and said shoes.

21. In a friction absorbing device, end followers, a plurality ofresilient members, friction shoes supported from one of said followers,and friction walls on the other of said followers engaging said shoesand one of said resilient members, the other resilient member havingabutment with said followers and said shoes.

22. In a friction absorbing device, a coll spring. a top followersupporting segmental friction shoes, a segmental bottom follower havingfriction walls projecting between said spring and said shoes forfrictionai engagement therewith, and a resilient member abutting saidshoes and said followers.

23. In a friction absorbing device, a coil spring, a top followersupporting segmental friction shoes, a segmental bottom follower havingfriction walls projecting between said spring and said shoes forfrictional engagement therewith, a resilient member compressed betweensaid shoes and said followers, and means on said followers engaging saidspring to retain said device in assembly.

24. In a friction absorbing device. outer resilient means, a segmentalbottom follower, a top follower, friction shoes supported from said topfollower, and a resilient member abutting said shoes and said followersfor bringing said shoes, said bottom follower, and. said outer resilientmeans into tight frictional engagement.

25. In a friction absorbing device, s. coil spring, a top follower,friction shoes supported from said top follower, a bottom follower withfriction walls having cylindrical face engagement with said shoes andsaid spring, and a resilient member abutting said shoes and saidfollowers.

26. In a friction absorbing device, a coil spring, a top follower,friction shoes supported from said top follower, a bottom follower withfriction walls having cylindrical face engagement with said shoes andsaid spring, and means on said followers interlocking with said spring.

4 amines 27. In a friction absorbing device. a coil spring, endfollowers received within said spring and having spiral interlockingengagement therewith, shoes supported from one of said followers, and

friction walls on the other of said followers, and

a resilient member abutting said shoes and said followers and'urlng saidshoes into tight frictionai engagement with said walls when compressed.

